基于染色算法的地震干涉成像技术  

Seismic interferometric imaging based on staining algorithm

作　　者：李振春[1,2] 刘畅[1,2] 曲英铭 苏琳淞 丁泽政 陶同熠 LI Zhenchun;LIU Chang;QU Yingming;SU Linsong;DING Zezheng;TAO Tongyi(State Key Laboratory of Deep Oil and Gas,China University of Petroleum(East China),Qingdao 266580,China;School of Geosciences in China University of Petroleum(East China),Qingdao 266580,China;Zhidan Oil Production Plant,Yanchang Oilfield Company Limited,Yan̍an 717500,China)

机构地区：[1]深层油气全国重点实验室(中国石油大学(华东)),山东青岛266580 [2]中国石油大学(华东)地球科学与技术学院,山东青岛266580 [3]延长油田股份有限公司志丹采油厂,陕西延安717500

出　　处：《中国石油大学学报（自然科学版）》2024年第3期37-43,共7页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家自然科学基金项目(42074133,42174138);中国石油天然气股份有限公司重大科技合作项目(ZD2019-183-003);中国科协青年人才托举计划(YESS20200237);中央高校基本科研业务费专项(22CX07007A)。

摘　　要：为了提高基于染色算法的逆时偏移计算效率,提出基于染色算法的地震干涉成像技术(CC-STRTM)。地震干涉技术作为一种炮记录的处理手段可以消去两个炮记录中相同的信号。该技术将观测系统从地表下移到人为选取的地下校准面,将研究区域缩小到校准面下侧。再分析干涉成像结果,选出染色区域。最后完成复数域的逆时偏移处理,输出虚部偏移结果。通过复杂模型对该方法进行测试,对比分析成像结果和计算效率。结果表明,该方法在提高成像精度的同时不降低计算效率。To enhance the computational efficiency of reverse time migration(RTM) using the staining algorithm,this paper proposes seismic interferometric imaging based on the staining algorithm(CC-STRTM).Seismic interferometry technique,applied to shot records,eliminates the same signals in two shot records.This technique shifts the observation system down from the surface to an artificially selected subsurface datum surface,focusing on the lower side of the datum surface for analysis.The seismic interferometric imaging identifies the stained areas,facilitating RTM processing in the complex domain and generating imaginary part migration results.The proposed method usdergoes testing using a complex model to compare and analyze the imaging results and computational efficiency.The results indicate that the method enhances imaging accuracy without compromising computational efficiency.

关 键 词：地震干涉成像 染色算法 逆时偏移 盐下构造 计算效率 

分 类 号：P631.4[天文地球—地质矿产勘探]